Edward grttber



Re.Y 15,790

March 1'1 1924;

. E. GRUBER UNIT FDR TRACK `BELTS Original Filed March 31. 1919 2sheets-sheet 2 l1 A df;

BYl

ATTORNEY "Thug- INVENToR il inn/12p 6205,52

the appended claims.

Reissueafiuar. l1, 1924.

I UNITED STATES yMTENT OFFICE. y

"AEDWAB-D GRUBER, OE LYNDHURST, OHIO, ASSIGNOR T0 THEv CLEVELAND TRACTORCOMPANY, OF EUCLID, OHIO, A CORPORATION 0F OHIO'.

UNIT FOR TRACK BELTS.

original No. 1,359,499, dated November 23, 12.320. seriafNo. zsazs, fuedriareh si, i919. Animation ror-l reissue filed January 23,

To all whom z't may concern.:

Be it known that I, EDWARD GRUBER, a citizen of the United States,residing at' Lyndhurst, in the county of Cuyahoga and State of Ohio,have invented a certain new anduseful Improvement in Units'for TrackBelts, of which-the following is a full, clear, and exact description.vThis invention is an improvement upon the track unit 'or link which isshown and described in the Patent 1,317,896 to E. H. Savage, issuedOctober 7, 1919, the principal object being to increase the strength anddurabilit of the link sides of said unit, and to diminish thel chancethat the horizontal flanges at the u per edges of said link sides, whichserve as aring surfaces orrail tops for the truck wheels shall be so'mutilated and deformed in usethat they cannotsatisfactor-ily serve thepurposeforjvhich they are provided,

HThe invention consists in the combination of parts shown in thedrawingand hereinafter described, as definitely pointed out in In thedrawing, Figure 1 is a plan vi'ew of a track unit 'embodying theinvention; Fig. 2 .is a sectional planview; Fig.` 3 is a longitudinalcentral vertical section, and.- Fig. 4 is a rear end view of said unit;Fig. 5 is a plan'view of a. modified construction;

I i .Fig 6 is a side elevation thereof, and Fig. 7

is a front elevation partly broken away and sectioned. v 4

The link comprises three members, viz: the middle member A and the twoside members B and C, all made from metal sheets bent into the `formsshown and secured togeth'er. The middle memberA has the form of asubstantially square U', and is soformed. b bending up the sides of themetal plate,' tlihreby producing the flat bottomor shoe portion l2, andthe two vertical longitui' dinally extended rails 13.

The two side members B and C are alike except that theysare'ri hts andlefts. .Each has a `vertical longitu inally extended rail 21; andmaynave a horizontal shoe portion 22, of which the rail is an integralpart, as shown in Fig. 4; or it may not as shown in Figs. 5. to 7. Theserails are so shaped that when the three pieces are laced side by sidethe rails 13 and 21 will) be in contact near the front end of the unit,and near the 1922.` Serial No. 531,270.

rear endY of the unit; but the parts of the rails between Saidcontacting front and rear ends are :spaced aI art.V This results .from`the fact Ythatftlie.rails 13 near their rear ends are offsetapart;andthe rails 21Anear their front ends V'a1-je offset toward oneanother.4

The offset portions are, however, parallel with each other'a-nd withtherails from which coV4 they are offset. When the rails are placed' itogether as stated, the offset front ends of the rails 21 engage withthe outer, faces of the front ends of the rails 13 and are connectedAwith thm by'tspot welding, rivets and the like. The offset rear ends ofthe rails 1 3 will likewise engage the inner faces of the rails 21, andthese engagin parts are connected together by spot wel ing, rivets orthe like. v -v The offset parts of said rails at the front and rear endsof the unit, together with the parts ofthe rails which contactwith andare secured to said offset parts constitutedouble thick ears. These earsat the rear ends of L l the unit are farther apart than those at thefront endof the unit; and therefore the ears at the front end of theunit may go between the ears at the rear end of the adjacent unit; andthe overlapping ears maybe pivoted togetherv by =any suitable or wellknown means. Y

The part of one rail: which -is spaced away from the associated rail isformed with a turned over horizontal-fiange 24 along its upper edgewhich fiange extends over and rests upon a Apart` of 'the companionrail.

VPreferably the flanges 24 are on and parts ofthe rail 21; andpreferably also the rails 13 have each a recess 16 cut out of its upperedge into which a flange 24 is fitted, so that the upper surface of thesaid fiange is flush with the upper edge of the rail 13.

These flanges form strong, well braced, broad surfaces for the trackwheels to ride onand they are so constructed and sup- 4ported that thereis practically no chance that' they will become deformed by use to `al1extent such as will render them inefficient for thepurpose vfor whichthey are provided.

In vthe construction shown a shoe 30 is i provided.- This is a flatmetal plate whose side edges are coincident with the side edges of theshoe portions of the members B and C, and these shoe portions of saidmembers f. Figs. io-

as does the middle por- The shoe is secured bolts, rivets rest vupon theshoe tion of the member A. tc these,V parts by'shot Welding, or thelike. i

The front' edge of this attached shoe may be turned down to form the'ground engag ing ribyor grouser 31. y i

In the modified construction shown in to 7 the members B and C have noshoe portions, but are in most other respects substantially like thesaid members as shown in'Figs. 1 to 4 inclusive. The horizontal flanges24 are, however, formed on .the upper edges ot' the railsfl; and theseflanges rest only on the top of the offset-Web 25 of the rail 21.

i As shown in Figs. 5 to 7, thc shoe 3() is only connected with themiddle member Having. described my invention, I claim: 1. A track 'beltunit comprising three metal membersl arranged side by side and connectedtogether, viz, a middle member having along its side edges verticallongitudinally extended side rails, and two side members each having avertical longitudinally extended rail which is secured to a rail of themiddle member, the rails which are so secured together being in contactat vtheir .front and rear ends and being spaced apart between saidcontacting ends, the upper'V edge of one of said spaced apart railsbeingr formed With a horizontal flange which overlies and engages apartof the upper edge of the associated rail.

2. A track belt unit comprising three metal members which are arrangedside by side andare connected together, viz, amiddle member having alongits sides vertical longitudinally extended rails which at their rearends are otfset apart, and two-side members each having a verticallongitudinally extended rail which engages and is secured to the innerface of the offset part of a rail of the middle `member,-the rails ofsaid side members atrtheir front end being offset toward oneanotherf-said olfsetparts being in engagement with the outer faces ofthe associated upper edge of one of the rails of each pair of connectedrails being formed with a horizontal flange which overlies and engagesthe upper edge of the associated rail. Y

3. A track belt unit comprising three rails ofthe middle member, theymetal members arranged side by side and connected together, viz, amiddle member having along its side edges vertical longitudinallyextended side rails, and two side members each having a verticallongitudinally extendedrail which is secured to a rail of the middlelmember, the rails which are so secured together' being in contact attheir front and rear ends and being spaced apart between said contactingends, the upper edge of one of said spaced apart rails being formed witha horizontal flange which over lies and engages the upper edge ot'llreassociated rail, and a shoe upon which said three members aresecured, which shoe has at its front end an integral dov uwardly bentand transversely extended groundengaging rib.

4l. In a track belt unit, a shoe, a central rail .member having a basesecured lto said shoe and upturned sides YForming rails, and side railmembers having a base secured to said shoe and upturncd sides formingrails.

5. In a track belt unit, a shoe, a' central rail member having a basesecured to said shoe and upturned sides forming rails, and side railmembers having a base secured to said shoe and upturned sides secured tothe sides ot' said central rail member.

(i. In a track belt unit, a slice, a central rail member having upwardlyextending sides secured to said shoe, and side rail members having a.base secured to said shoe and upwardly extending rails provided withbent over llanges.

7. In a track belt unit, a shoe, a central rail member having abasesecured to said 4shoe and sides forming rails extending'up- Wardly, andside rail members secured to the sides ot' said central rail member andhaving rail flanges projecting there ['rom and supported by the sidesoit said central rail member. n V i 8. In a track belt unit, a shoe, acentral rail member having a basesecured to said shoe and sidesextending upward therefrom forming rails the top edges thereof havingrecesses, and side rail members secured to said shoe having flanges bentover and supported Within the lrecesses in the top edges of the sidesotsaid central rail member.

In testimony whereof, I hereunlo attix mv signature.

l EDWARD GRUBER.

